Chess game apparatus

ABSTRACT

The invention relates to a chess-type game for two players, comprising a board and chessmen, the board being uniformly divided into playing positions and having n distinguished boundaries. The chessmen of each player comprise a king, a plurality of pawns and a plurality of major pieces. Each of the major pieces is included in even amounts, the major pieces comprising a prince, a bishop, a rook and a knight. The board is square and is uniformly divided into 81 squares with nine squares on each side. Each player is provided with two of each of the major pieces so that each player has the followiong chessmen: a king, nine pawns and eight major pieces, namely, two princes, two bishops, two knights and two rooks.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to a novel chess-like class of games for twoplayers and comprising a game board divided into playing positions andplaying pieces, the number and arrangement of the positions and piecesbeing such that perfect symmetry is obtained on the board with respectto a uniquely identifiable central file of positions of each player.

In one embodiment herein referred to as two-player Grandchess, the boardis square and is divided into 81 squares and each player has 18 pieces.

2. Statement of the Prior Art

The games herein are developed from and have many similarities to anddifferences from the well known game of chess which will be referred toas "regular or conventional chess". A description of the present daychess can be found, for example, in the Encyclopedia Britanica (see forexamples 1958 edition, vol. 5, pages 423-435).

SUMMARY OF THE INVENTION

In accordance with the invention, a chess-like game for two playerscomprises a board and chessmen, said board being uniformaly divided intoplaying positions and having distinguished boundaries, the chessmen ofeach player comprising a king, a plurality of pawns and a plurality ofmajor pieces, said major pieces comprising an even number of princes, aneven number of rooks, an even number of bishops and an even number ofknights.

In one embodiment the board is square and the playing positions comprisesquares. The board is divided into 81 squares. Each side of the board isnine squares long, and the pieces of each of the players include two ofeach of the major pieces, whereby the chessmen of each player comprise aking, nine pawns, and eight major pieces namely two princes, twobishops, two knights and two rooks.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be better understood by an examination of thefollowing description together with the accompanying drawings in which:

FIG. 1 illustrates a basic board in accordance with the invention foruse by two players;

FIG. 2 shows the arrangement of chessmen for the board of FIG. 1.

DETAILED DESCRIPTION OF THE DRAWINGS The Board

Referring to FIG. 1, the basic Grandchess board comprises 81 squareswhich may be coloured alternately light and dark for better visibility.The players, designated White and Black, sit on opposite sides of theboard. A row parallel to one side of the square board is called a rank;a row at right angles to the ranks is a file. The board has nine ranksand nine files as shown in FIG. 1. We note that the four corners of theboard have the same colour, in contrast to the conventional Chess boardwhere two corners are dark and the other two are light. An algebraicnotation may be used to designate the squares of the board, as shown inFIG. 1. Thus the central square of the board for example is designatedsquare e 5. Alternatively, a geometric notation may be employed with thecentral square of the board, for example, as the origin of cartesiancoordinates, i.e., the point (0,0). In this system the bottom left handcorner square in FIG. 1 is designated as the square (-4,-4).

Also shown in FIG. 1 are four axes of symmetry of the Grandchess board.These are the horizontal axis X--X, the vertical axis Y--Y and theinclined axes X--W and Z--Z. In contrast to Regular Chess we have aunique central file (the e file), a unique central rank (the fifth rank)and a unique central square (square e 5).

The Pieces

Each player in this game has 18 pieces; the king, nine pawns and eight"major pieces". These major pieces are in the form of four pairs; a pairof princes, a pair of rooks, a pair of bishops and a pair of knights. A"prince" in Grandchess is identical to a "queen" in Regular Chess. Thusin Grandchess a player has two princes each having the power of thequeen of Regular Chess. All other pieces of Grandchess havesubstantially the same significance, rules of movement and of capture ofother pieces as those associated with them in Regular Chess.

The Initial Set-up

In Grandchess the 18 pieces of each player are set up in such a way thatsymmetry about the line joining the two opposing kings (the centralfile) is obtained. This symmetry does not exist in Regular Chess, and ismade possible here through the addition of an extra "queen" (prince) andthe enlargement of the size of the board. As shown in FIG. 2 the king ofeach player in Grandchess stands at one end of the central file with theking pawn standing on the square adjacent to it on the central file. Themajor pieces (the pair of princes, the pair of rooks, the pair ofbishops and the pair of knights) of White are situated on the first rankon the four squares to the right and the four squares to the left of theking such that each pair of a kind (a pair of knights for example) issymmetrically positioned with respect to the king; i.e., the right andleft members of each pair are equidistant from the king. Thus, forexample, if a prince is positioned on square f1 the second prince shouldbe positioned on d1. The remaining eight pawns are situated on the rightand left side of the king pawn on the second rank. In a similar wayBlack's pieces are positioned on the ninth and the eighth rank, as shownin FIG. 2.

The Course of the Game

As noted earlier the rules of movement and capturing are substantiallythe same as for Regular Chess. However, fine details such as the numberof squares a pawn can move from its base line (second rank for White)and capturing en passant can be presently adopted for Grandchess butneed not be rigidly kept in all set-up variations.

Adopting identically the rules of movement, capturing and pawn promotionof Regular Chess yields a very interesting game where controlling thecentral square and the diagonals of the board, the beauty of perfectsymmetry and the large dimension of the "battle field" (the board) arefactors that add to the pleasure of the player, stimulate hisimagination and tax his skill and ingenuity. Castling on the left or theright side is equally useful, and may be performed in a way identical toqueen-side castling of Regular Chess. This is not a necessary condition,however, and could be replaced by a castling similar to king-sidecastling of Regular Chess, where the king ends up at the second squarefrom the edge of the board (squares b1 and h1 for White). Moreover, wenote that the symmetry in Grandchess implies positioning the two bishopson squares of identical colour, and hence to their moving alongdiagonals of the same colour. They can thus reinforce each other'saction considerably, particularly when they are both on the samediagonal. On the other hand, left alone with their king they would notbe able to force a mate on the adversary king.

Advantages of Grandchess over Regular Chess

1. In contrast to Regular chess, in the initial set-up a player's majorpieces are located symmetrically around the king. This is a more naturalset-up and resembles more closely the optimum positioning that would bechosen by a warring army. The king is moreover guarded by a prince oneither side.

2. There is one unique central file for which enemy forces will competeand one unique central rank defining the border between the two armies.

3. There is one unique central square in the middle of the battleground(the board) for which each player will compete and on which he will tryto place one major piece, or, alternately, take advantage of theadversary's preoccupation with it to launch an attack from the side.

4. In Regular Chess castling on the queen side is considered weaker thancastling on the king side. In Grandchess the perfect symmetry of theset-up makes castling on either side equally effective.

5. The Grandchess board has 17 squares more than the Regular Chessboard, and has two "chessmen" more than those of Regular chess.Moreover, due to the symmetry, a larger number of variations becomesnatural. Grandchess is thus a more complex game which includes many morepermutations than Regular Chess. Adding such complexity to the gamewhile at the same time perfecting its symmetry yields a game that addsto the intrigue, stimulates the imagination and tests the ingenuity ofthe player, for exploiting the symmetry (or lack of it) of a positionduring a game and using it to his own advantage.

6. Computer programs for playing or analysis of chess would benefit fromthe symmetry around the central file and central rank of the board toreduce considerably the programming complexity and the memoryrequirement for such programs.

7. The introduction of such a new game would incite new research andsubsequently publications and literature on the analysis of the openingsin the different variations, middle game and end game, and thus generatea new interest in the game in general.

8. The inclusion of two princes (queens) and two bishops in Grandchessthat move on the same row of squares and thus reinforce each otherconsiderably, as do the rooks in conventional chess, leads to moredynamic, critically balanced and possibly more violent battles and wouldrequire more caution from players than in Regular Chess.

I claim:
 1. A chess type game for two players comprising .Iadd.aplurality of chessmen, .Iaddend.a square board, said board beinguniformly divided into eighty-one squares, each side of said board beingnine squares long, and wherein the chessmen of each player consist of aking, nine pawns and eight major pieces, namely, two princes, twobishops, two knights and two rooks, each of said kings, pawns, bishops,knights and rooks having the same moves and strengths as thecorresponding .[.pieces.]. .Iadd.chessmen .Iaddend.in conventionalchess, .Iadd.chessmen having identical moves and strengths being of aform which indicate this identicality, and specifically, the pawns beingof an undistinguishable form which indicates that every pawn has thesame moves and strengths of every other pawn, .Iaddend.each of saidprinces having the same moves and strengths as the .[.queens.]..Iadd.queen .Iaddend.in conventional chess, the .[.pieces.]..Iadd.chessmen .Iaddend.of one player being disposed, at the beginningof each game, with the king of the player in the central square of thefirst row of one end of the board, the major .[.pieces.]. .Iadd.chessmen.Iaddend.being disposed on said first row in symmetrical arrangementabout said king, and the pawns being disposed in the second row at saidend of said board, the .[.pieces.]. .Iadd.chessmen .Iaddend.of the otherplayer being disposed, in similar arrangement, at the end of the boardopposing said end.